Navigator 2LT Rollin P. Ball, 324th Bomb Sq, 91st BG, survived the ditching of his ship, B-17F 41-24464 "Excalibur" (coded OR-J, borrowed from the 323rd Bomb Sq) returning from the 4 March 1943 mission to Hamm. Less than three months later he would be declared MIA; returning from the 21 May trip to Wilhelmshaven aboard B-17F 41-24515 "Jersey Bounce" with LT Phillip S. Fischer & crew, they would disappear over the North Sea; no trace was ever found.